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A187729
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T(n,k)=Number of (n+1)X(k+1) binary arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors
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10
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16, 43, 43, 130, 174, 130, 391, 689, 689, 391, 1173, 2804, 3698, 2804, 1173, 3520, 11324, 20684, 20684, 11324, 3520, 10558, 46003, 114633, 161571, 114633, 46003, 10558, 31672, 186672, 641743, 1252304, 1252304, 641743, 186672, 31672, 95004
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OFFSET
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1,1
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COMMENTS
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Table starts
.....16.......43.......130.........391..........1173............3520
.....43......174.......689........2804.........11324...........46003
....130......689......3698.......20684........114633..........641743
....391.....2804.....20684......161571.......1252304.........9823368
...1173....11324....114633.....1252304......13555195.......148669520
...3520....46003....641743.....9823368.....148669520......2287444987
..10558...186672...3588249....76931991....1628541369.....35118814718
..31672...758077..20085335...603313744...17862966996....539993233442
..95004..3077859.112408781..4730797071..195900562382...8301474121906
.284980.12497826.629194966.37100667206.2148718629188.127642216451132
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LINKS
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EXAMPLE
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Some solutions for 4X3
..1..1..0....0..1..0....0..1..0....1..1..0....1..1..0....0..1..0....1..1..1
..1..1..1....1..0..0....0..1..0....1..0..0....0..1..0....0..1..1....0..1..1
..1..0..0....1..1..1....1..1..1....1..1..1....0..1..1....1..1..0....0..1..0
..1..0..1....0..1..1....0..0..1....0..0..1....1..1..0....1..0..0....1..1..1
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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